In triangle ABC, if a=4 b=3 and c=3 then what is the value of COS A

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

What is the distance between point a and b

Combine like terms to make a simpler expression 3z+z